windows xp sp 2 -vs- Ratty compaq

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I have been going crazy with this old cpu I have, I keep having problems with errors and don't know what to do,I will add this info so you cPhysical Processors: 1
Logical Processors: 1
Processor Vendor: Intel(R) Corporation
Additional Name: x86 Family 6 Model 8 Stepping 3
Popular Name: Celeron
Code Name: Coppermine-128, Celeron II
Revision: B0,cB0,cB0c
Frequency: 566 MHz
Serial Number: 0000-0683-0383-F9FF-0000-0000
Cache Level I: 32 KB
Cache Level II: 128 KB
Cache Level III: 0 KB
BIOS Vendor: Compaq
BIOS Type: AT/AT COMPATIBLE
BIOS Version: 686C3
Copyright: COMPAQ - 1
Date: 04/18/2001
Size: 256 KB
Motherboard Vendor: Compaq
Motherboard Model: 06C0h
Version: None
Serial: None
Ports: 0
System Slots: 4
an maybe tell me what options I have,Intel(R) Processor Frequency ID Utility
Version: 7.2.20041115
Time Stamp: 2007/10/20 19:21:08
Number of processors in system: 1
Current processor: #1
Processor Name: Intel(R) Celeron(R) Processor
Type: 0
Family: 6
Model: 8
Stepping: 3
Revision: 14
L1 Instruction Cache: 16 KB
L1 Data Cache: 16 KB
L2 Cache: 128 KB
Packaging: FC-PGA
MMX(TM): Yes
SIMD:
I have xp pro installed and just updated to sp2, I keep getting errors like/ Event Type: Error
Event Source: ACPI
Event Category: None
Event ID: 4
Date: 10/21/2007
Time: 3:45:23 AM
User: N/A
Computer: GNUINK
Description:
AMLI: ACPI BIOS is attempting to read from an illegal IO port address (0x75), which lies in the 0x74 - 0x76 protected address range. This could lead to system instability. Please contact your system vendor for technical assistance.
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 00 00 00 00 04 00 52 00 ......R.
0008: 00 00 00 00 04 00 05 c0 .......À
0010: 00 00 00 00 00 00 00 00 ........
0018: 00 00 00 00 00 00 00 00 ........
0020: 00 00 00 00 00 00 00 00 ........
Any ways I am lost any help will put you on my christmas list! Thanx Magickman
I also went to compaq and got the bios flash for this thing but it was the same as was already on this thing..HELP?:confused Magickman

 

Did SP 1 work okay on it?

 

Yes everything worked pretty well(as usual) until I started with the updates, and I have went through this who knows how many times and ways I can't even remember! I'm in a bind with $$ or I would hummm this sob out the backdoor. What is really strange is although I thought I had a problem solved with a svchost.exe using all of my cpu at once it has come back, now what? I'm open to any suggestions..thanks Magickman

 

Might try reading this for the ACPI Bios issue. http://www.driverheaven.net/hardware-discussion-support/2345-acpi-error-windows-xp.html.
Hope this helps.